With the discussions lately on Unmanned Surface Vehicles, I thought I would share my results for anyone else who is considering building one.
This USV is being used for my master's thesis in Geographic Information Science and Technology at the University of Southern California. I built this vehicle to affordably map eelgrass in shallow water where a heavy manned vessel would be impractical.
Some of my previous entries can be found here: http://diydrones.com/group/arduboat-user-group/forum/topics/rugged-arduboat-for-mapping-applications
It does around 1.5-2.0 m/s at full power and I get about two hours on 2x 10,000mAh Lipo batteries (Same ones used in the BlueROV2). There are two T-200 thrusters mounted on the bottom providing skid steering. The 3D printed weed guards from Jason Spall are mounted over them. Eelgrass fouling was a bit of an issue before.
Using a Lowrance HDS-7 and a TotalScan transducer I am able to pretty accurately map the bottom and mosaic it into a useful map.
The survey mode still doesn't work right for me in QGC, but the waypoints work fine.
So what's next? I'm thinking of doing two projects:
- Continuing the work Rusty and BlueRobotics started with the SolarSurfer project. I would really like to get something out roaming outside the California Channel Islands.
- Making a hull for a hovering torpedo shaped UUV. Yes, I know the navigation isn't quite there yet...but it will be one day.
Let me know your thoughts or if anyone wants additional pictures. I tried to keep this as simple and cheap as I could.